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Rhodium-catalyzed CO gas-free carbonylative cyclization using aldehydes *.(Report)
Pure and Applied Chemistry
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May 1, 2008|
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COPYRIGHT 2008 International Union of Pure and Applied Chemistry. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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Abstract: A new protocol for CO gas-free carbonylation, in which aldehydes are used as a substitute for CO, is described. The protocol consists of two Rh-mediated processes; the Rh-mediated decarbonylation of aldehydes, which leads to the formation of Rh carbonyl, and subsequent Rh-catalyzed carbonylative cyclization utilizing the in situ formed Rh carbonyl species.
Keywords: homogeneous catalysis; carbonylation; transition metals; carbonyl; aldehydes.
INTRODUCTION
Transition-metal-catalyzed carbonylation is recognized as a powerful tool for the ...
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